Taptiles

A silver badge is awarded during the month for obtaining 6,000 coins through Daily Challenges. Easy challenges are worth 100 coins, medium is 150, gold is 200, and expert is 300; completing all three challenges for a day nets an additional 150 coins.

The bonus is that while it is a Daily Challenge, you are available to go back to any previous day that month to play previous challenges, so if you miss a day it isn't the end of the world. For a silver medal, you need to be able to complete two of the three daily challenges every day at a minimum.

For Color Charge and Mix and Match, it tells you how many puzzles to solve in how much time. As a baseline, convert the time to total seconds and divide by the number of puzzles to solve for seconds per puzzle. Anything that gives you more than 30 seconds per puzzle is typically easy, anything that gives you less than 20 seconds per puzzle will be challenging if you drop your speedchain. A challenge for completing 10 or more puzzles is usually a hard one that requires you to keep your speedchain up. For a silver medal, these ones can usually be ignored in favor of keeping things easy.

For Sprint Match, play it a few times before giving up on it. The overall block patterns are the same, so it might just come down to knowing what the last pattern that messes you up is. Also, don't give up as soon as you drop your chain! You've got plenty of time to build up another one. Unfortunately, the only way to figure out how difficult Tap Tower is comes down to actually playing it.

As of April 2013, the scoring parameters changed, making it much easier to get a silver medal. Completing every day will earn you a silver medal around the 13th. The previous strategy of completing two a day for a month still stands as well.

See my solution under "Go For the Bronze." Your system clock can be changed to a previous month in order to access additional challenges and medals and therefore achieve multiple golds, silvers, and bronzes in a single month.